-x + 4 = -7
(take away 4 from both sides of the equation)
-x = -11
(times both sides by -1)
x = 11
(-11 + 4 = -7)
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in algebra you get x by itself by doingthe same operation to BOTH sides of equation
-X + 4 = 7
SUBTRACT 4 from BOTH sides
-X = 3
MULTIPLY BOTH SIDES by NEGATIVE 1
X = -3
If: 7+t = 11 Then: t = 11-7 So: t = 4
2x+3 = 7 2x = 7-3 2x = 4 x = 2
Solve for x. 3x + 3 = x + 7 2x + 3 = 7 2x = 4 x = 2 Check it. 6 + 3 = 2 + 7 It checks.
3x+4 = 2x-3 3x-2x = -3-4 x = -7
n= -2